Machine for polish ing wood



G.'PELSTRIN G. Machine for Polishing Wood.

No.-22 4,47 3. Patented Feb 10, 188 0.

",PEIERS, PKOTD-LITHOGRAFNER. WASHINGTQN, DMZ.

j UNITED {STATES PATENT OFFICE.

GEORGE rnnsrnrnafloncInoINNATI, onto. .1

MACHINE l -OR Pous'HiNqwooo.

SPECIFICATION forming ar of nettersratent No. aaaevaeatea February 10, 1880. I Application filed October 21., 1879.

' To all whom it may. concern:

Be it known that I, GEORGE PELSTRING, of

. Cincinnati, in the county of Hamilton and State of Ohio, have invented certain new and useful Improvements in Combined Planing, Smoothing, and Polishing achines, ofwhich the following is a specification.

My invention, in its preferred form, is designed to effect, in'a single machine and by a continuous operation, the planing and polishing on one side and thesmoothing on the other of ordinary sawed boards or planks.

A useful purpose of my invention, and that for which it is more particularly devised, is the production of cigar-box lumber-so polished. on its front surface as to beready either' for immediate use or-to receive any desired staining or graining, andrso divested of the.

' saw-marks and other asperities of its rear surface as to get ,rid of useless material without unnecessary sacrifice of lumber, and to adapt n such .surface for the paper'or other liningwith which it may be desired to be covered. I

My machine'comprises, in a single frame, a series of paired feed-rollers with interposed planing, polishing, and smoothing or other finishin g rollers or cylinders, each finishing-roller being opposed on the reverse surface of the board with 'atsuitable idler or pressure-roller,

such as are customarily employed in devices of this class. 1

In the preferred form of my improvement two or more of the finishing-rollers with their corresponding idlers are set at reversed obliquities, and are separated by afinisher and" idler, which revolve parallel with the feed, in order to moreeffectually efface the marks left by the saw, the planing-bits, orfby the preceding finishing-rollers." 1

In the accompanying drawings amachine embodying my invention is represented by the following figures: V I 9 I Figure 1 is a partially-sectioned side elevation. Fig. 2 is a top view. Fig. 3'isa,transverse section at the linear: m, Fig. 1'.

adjustable bed-piece, B, that contains the journal-boxes of my lower range of rollers, to be presently described. The bed-piece B rests upon screws 0, whose bevel-gears D engage with similar gears E upona horizontal shaft, F, terminating in ahand-wheel, G, conveniently located for the operator, who, by turning the wheel G to the right or to the left, elevates or depresses the. said bed-piece and its train of rollers. In the upper part of the frame are other vertical slots, a",for the jour- Dal-boxes of the uppertier or train of rollers. Set-screws H, tapped .in the frame, enable the depression, at the discretion of the oper- 6o ator, of any one or more of the upper rollers. I I represent the upper feed-rollers, having the represented geared connection J with the naled in the represented'reversely-oblique positions in the frame, while cylinder Q is, on the contrary, parallel with the feed rollers, as 7 5 shown. Each cylinder N, O, P, and Q has a pulley, R,'for belt-connection with any suitable driver, and each is accompanied by a corresponding idler cylinder, N OP Q, to which it is so geared as to secure co-rotation of the cylinders composing each respective pair."

' Powdered glass,emery,' or other customary or suitable abradants may be employed, either applied to the peripheries of the polishing and smoothing cylinders or incorp'orated into their substance.

The adjustable bed-piece B and its described accessories enable the apparatus tobe promptly adapted to the thickness of the lumber undergoing operation. o

Theabove-described illustration of my invention may be varied in non-essential particulars. For example, instead of separate beltconnection with a common driver, the various I cylinders and rollers may be rotated by geared 5 A suitable frame, A, supports a vertically connection witheach other and with the plan ershaft. A- greater or less number of planing, of polishingfand of smoothing cylinders may be employed; Theplaningandfinishing cylinders M Nmay be located on the delivery instead Ioo of on the receiving side of the smoothing-cylinders O P Q, or said cylinders M N may be located beneath and the cylinders 0 I Q be located above.

I am aware that ithas been proposed to plane and polish doors, &c., on both sides; but such an operation would involve an expenditure of power and sacrifice of material not required for many purposes, such as cigar-box lumber. My device is intended, while planing and polishing one side of such lumber, to merely remove the grosser aspcrities from the other side, and the above-described mechanical appliances are directed solely to the accomplishment of these diverse results on the two sides of the stuli.

I claim as new and of my inventionlhe machine herein described for planing GEO. PELSTRING.

Attest:

GEO. H. KNIGHT, FRANK J. JONES. 

